SOLUTION: n to the power of 4 + 8n to the power of 3 + 15n to the power of 2

Question 24931: n to the power of 4 + 8n to the power of 3 + 15n to the power of 2
Answer by pwac(253) (Show Source): You can put this solution on YOUR website!
n to the power of 4 + 8n to the power of 3 + 15n to the power of 2
I assume you have to solve for n ?
First put the expression =0 so now we have an eqation

look for common factor,in this case
take this out to get
expression within brackets factorises easily to give

take n+3=0
so n=-3
n+5=0
n=-5
so your answer is n=-3 and n=-5
try plugging these into original equation to check
hope this helps
Pete
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